A simulated assembly method for continuous assembly construction of steel pipe arch rib segmental frame method

Abstract

The invention discloses a simulation assembling method used for the continuous assembling construction of a steel pipe arch rib segment bed jig method. The simulation assembling method comprises the following steps: 1) establishing an assembling platform and an assembling bed jig finite element model; 2) loading assembling load; 3) solving stress distribution and displacement distribution; 4) determining stress exceeding positions and the deformation amount of a supporting bed jig before and after loading is carried out: independently determining the stress exceeding positions on the assembling platform and the assembling bed jig, and meanwhile, determining the deformation amount of each supporting bed jig in the assembling bed jig before and after loading is carried out; and 5) determining a stress exceeding position reinforcement processing scheme and an assembling bed jig deformation control scheme: determining the reinforcement processing scheme of each stress exceeding position on the assembling platform and the assembling bed jig, and determining the deformation control scheme of each supporting bed jig. The simulation assembling method has the advantages of being simple in steps, reasonable in design, convenient in implementation and good in use effect, can precisely simulate the continuous assembling process of the steel pipe arch rib segment bed jig method, and also can provide an accurate basis for the deformation control of the assembling bed jig.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a simulated assembling method for continuous assembling construction of steel pipe arch rib segment tire frame method. Background technique [0002] The assembly precision control of steel pipe arch rigid frame of the bridge requires very precise and difficult. In actual construction, the steel pipe arch rigid skeleton (also called steel pipe arch rib) is usually divided into multiple steel pipe arch rib segments, and the multiple steel pipe arch rib segments are assembled respectively, and then the assembled steel pipe arch ribs are assembled. Segments are spliced. During the construction process, when the steel pipe arch rib segments are assembled, the tire frame method is usually used for assembly, specifically, the splicing is performed on the pre-built assembled tire frame. For easy assembly, horizontal splicing is generally used, that is, the steel...

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Problems solved by technology

[0004] When analyzing the strength and stiffness performance of the Bailey girder bridge assembly platform and the tire frame, the analytical method is generally used for analysis. Specifically, the analytical equations provided by the mechanics of materials, theoretical mechanics and elastic mechanics are used for analysis and calculation. The structure of the girder bridge assembly platform is complex and there are many parts, resulting in extremely complex governing differential equations and difficult to determine the boundary conditions and initial conditions. It is difficult to obtain accurate analytical solutions using the analytical equations provided by material mechanics, theoretical mechanics and elastic mechanics. It is difficult to obtain an accurate analytical solution by using analytical equations; in addition, due to the increase in simplified conditions, the method of increasing the safety factor is often used, which wastes materials on the one hand, and on the other hand, it is difficult to control the deformation accuracy of the assembled tire frame due to the reduced accuracy

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